package com.paranoid.shiro04.config;

import com.paranoid.shiro04.shiro.cache.RedisCacheManager;
import com.paranoid.shiro04.shiro.realms.CustomerRealm;
import org.apache.shiro.authc.credential.HashedCredentialsMatcher;
import org.apache.shiro.cache.ehcache.EhCacheManager;
import org.apache.shiro.realm.Realm;
import org.apache.shiro.spring.web.ShiroFilterFactoryBean;
import org.apache.shiro.web.mgt.DefaultWebSecurityManager;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.util.HashMap;
import java.util.Map;

/**
 * 用来整合shiro的配置类
 */

@Configuration
public class ShiroConfig {

    //1、创建shiroFilter   负责拦截所有请求
    @Bean
    public ShiroFilterFactoryBean getShiroFilterFactoryBean(DefaultWebSecurityManager defaultWebSecurityManager){
        ShiroFilterFactoryBean shiroFilterFactoryBean = new ShiroFilterFactoryBean();

        //给filter设置安全管理器
        shiroFilterFactoryBean.setSecurityManager(defaultWebSecurityManager);

        //配置系统受限资源
        //配置公共资源
        Map<String,String> map = new HashMap<String,String>();
        /*默认认证页面路径  /login.jsp*/
        map.put("/user/login","anon");
        map.put("/user/register","anon");
        map.put("/register.jsp","anon");
        map.put("/**","authc");  //authc  代表请求当前资源需要认证和授权
        map.put("/user/getImage","anon");
        shiroFilterFactoryBean.setLoginUrl("/login.jsp");

        shiroFilterFactoryBean.setFilterChainDefinitionMap(map);

        return shiroFilterFactoryBean;
    }
    //2、创建安全管理器
    @Bean
    public DefaultWebSecurityManager getSecurityManager(Realm realm){
        DefaultWebSecurityManager defaultWebSecurityManager = new DefaultWebSecurityManager();

        //给安全管理器注入realm
        defaultWebSecurityManager.setRealm(realm);

        return defaultWebSecurityManager;
    }
    //3、创建自定义realm

    @Bean
    public Realm getRealm(){


        CustomerRealm customerRealm = new CustomerRealm();
        //修改凭证校验匹配器
        HashedCredentialsMatcher credentialsMatcher = new HashedCredentialsMatcher();
        //设置加密算法为md5
        credentialsMatcher.setHashAlgorithmName("MD5");
        //设置散列次数
        credentialsMatcher.setHashIterations(1024);
        customerRealm.setCredentialsMatcher(credentialsMatcher);

        //设置ehcache缓存处理
        customerRealm.setCacheManager(new RedisCacheManager());
        customerRealm.setCachingEnabled(true); //开启全局缓存
        //开启认证缓存
        customerRealm.setAuthenticationCachingEnabled(true);
        customerRealm.setAuthenticationCacheName("authenticationCache"); //设置别名
        //开启授权缓存
        customerRealm.setAuthorizationCachingEnabled(true);
        customerRealm.setAuthorizationCacheName("authorizationCache"); //设置别名


        return customerRealm;
    }

}
